EP 1174002 A2 20020123 - MOVING COIL DRIVER
Title (en)
MOVING COIL DRIVER
Title (de)
SCHWINGSPULENTREIBER
Title (fr)
SYSTEME D'ENTRAINEMENT DE BOBINES MOBILES
Publication
Application
Priority
- GB 0001484 W 20000428
- GB 9910217 A 19990429
- GB 9916837 A 19990720
Abstract (en)
[origin: WO0067523A2] A moving coil loudspeaker driver has at least one pair of coils (18, 20) on a former (16). The coils move between pole pieces (28, 30) of a permanent magnet system (28, 30, 32, 34). The pair(s) of coils (18, 20) are oppositely wound and closely spaced to reduce the combined inductance of the coils.
IPC 1-7
IPC 8 full level
H04R 9/02 (2006.01); H04R 9/04 (2006.01); H04R 9/18 (2006.01); H04R 7/04 (2006.01)
CPC (source: EP)
H04R 9/025 (2013.01); H04R 9/046 (2013.01); H04R 2209/041 (2013.01)
Citation (search report)
See references of WO 0067523A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0067523 A2 20001109; WO 0067523 A3 20010208; AU 4419000 A 20001117; CN 1347628 A 20020501; EP 1174002 A2 20020123; JP 2002543726 A 20021217; TW 478287 B 20020301
DOCDB simple family (application)
GB 0001484 W 20000428; AU 4419000 A 20000428; CN 00806413 A 20000428; EP 00925465 A 20000428; JP 2000614774 A 20000428; TW 89108617 A 20000505